After moving `↑ DASHB04RD` / `↻ R3BU1LD` / `↻ new session` into
the overflow `⋯` menu in #394, the per-button rules in agent.css
have no live consumer:
- `.btn-dashlink` (cyan back-link chip)
- `.btn-rebuild` (amber rebuild chip — note: the dashboard has
its own `.btn-rebuild` for the per-row R3BU1LD form on the
SW4RM tab, that stays)
- `.btn-new-session` (amber round-pill button)
- `.btn-send` (green send-button variant — orphaned since an
earlier compose-form retirement, swept here)
Plus a comment-only `#state-row` block (layout fully provided by
the renamed `.agent-state-row` / `.agent-header-row` classes).
Each removed block is replaced with a one-line "moved to overflow"
comment so future readers don't reintroduce the old chrome by
mistake.
agent.css 23.6kb → 22.4kb.
92becdd951